I actually type out all the fields in post processing and normally don't have a problem. Even though I have some files named the same thing followed by a number, perhaps not naming thirty images the same thing (even with the numbers) is actually the problem here.
When I come across an issue online, whether it be FAA. Flickr or what have you, the first thing I try to do is something that I haven't been doing the whole time I got the problem. Make sure there's only browser window open to this site. If you're on IE, consider Google. Consider changing the title.
It might be on FAA's end, but I think it would be wise to change what I'm doing first and see if you have better results.